Have you ever received any advertising on your cell phone?

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I always receive about 5 to 10 text messages contain advertisement per week. At first, I don't care because it was only like 1 to 2 times a week. But now, it becomes more frequent. Maybe I signed up for these ads and I don't remember when. I tried to stop it but I can't since there is no info on how to do it. Have you ever received any ad on your cell phone? Do you like it?